CN115583539B - Tow tension control device and method for composite material tow laying - Google Patents
Tow tension control device and method for composite material tow laying Download PDFInfo
- Publication number
- CN115583539B CN115583539B CN202211324447.5A CN202211324447A CN115583539B CN 115583539 B CN115583539 B CN 115583539B CN 202211324447 A CN202211324447 A CN 202211324447A CN 115583539 B CN115583539 B CN 115583539B
- Authority
- CN
- China
- Prior art keywords
- tension
- tow
- strand
- tension control
- friction wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 116
- 230000001603 reducing effect Effects 0.000 claims abstract description 71
- 238000007667 floating Methods 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000006247 magnetic powder Substances 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000011084 recovery Methods 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005008 domestic process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
- B65H59/36—Floating elements compensating for irregularities in supply or take-up of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
- B65H59/20—Co-operating surfaces mounted for relative movement
- B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
- B65H59/225—Tension discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
Landscapes
- Tension Adjustment In Filamentary Materials (AREA)
Abstract
The application relates to a tow tension control device for laying a composite material tow, which comprises a tension control mechanism and a tension reducing mechanism, wherein the tension control mechanism is used for stripping lining paper of a tow material roll, adjusting the tow tension and then transmitting the lining paper into the tension reducing mechanism for reducing the tension; the floating roller reciprocates along the guide rail slide block through the elastic element, the magnetic powder brake is used for controlling through analog input, and the position sensor is used for outputting the detected position analog signal of the floating roller on the guide rail slide block to the controller; the driving motor drives the transmission shaft to drive the friction wheel to move, and the air cylinder is used for driving the feeding wheel mechanism to compress or separate from the friction wheel. The application also relates to a method for controlling the tension of the silk bundle. The device and the method for controlling the tension of the tows for laying the composite material tows aim to solve the problem that the existing tows laying equipment is poor in laying quality such as bridging and wrinkling of tows caused by large tension and tension fluctuation when the tows reach a compression roller of a wire laying head.
Description
Technical Field
The application relates to the technical field of composite material strand placement, in particular to a strand tension control device and a strand tension control method for composite material strand placement.
Background
The main functional components of the composite material filament bundle laying equipment for realizing filament bundle laying are a filament laying head and a yarn box. The tows will produce a certain tension during the laying process. At present, the domestic method for controlling the tension of the filament bundles mainly comprises the following two methods in principle: 1. the method proposed by (application number: 202210264037. X) is to fix a tow roll on a servo motor, the tow on the roll passes through a guide wheel, a tension control mechanism, a tension reducing device and finally reaches a compression roller of a spinneret. The tension control mechanism adopts a floating roller, a guide rail and an air cylinder to realize reciprocating motion. The tension control mechanism is provided with an ultrasonic sensor, when the tension of the tows is unbalanced with the force set on the reciprocating mechanism, the tow band moves the floating roller to reciprocate, at the moment, the ultrasonic sensor receives signals and controls the servo motor to output related speeds, so that the tension of the tows and the force set by the tension control mechanism are balanced, the tension of the tows is controlled, the tows passing through the tension control mechanism enter a tension reducing mechanism based on the principle of passive friction, and finally enter a yarn laying head to be laid; 2. the device comprises a conveying motor and a brake which are arranged on the top surface of an upper plate, a barrier film winding mechanism, a conveying device mounting plate and a material winding mechanism which are arranged on the ground of a yarn frame plate, wherein an air cylinder, a tensioning mechanism and a conveying device are arranged on the conveying device mounting plate, the tensioning mechanism is connected with the conveying device, the brake is connected with the material winding mechanism, prepreg tows are sent out from the material winding mechanism, pass through the barrier film winding mechanism and enter the conveying device after passing through the tensioning mechanism. The device can effectively reduce the laying tension of the tows by 2N and improve the tension control responsiveness.
By adopting the mode of the first patent, the position signal feedback of the tension control mechanism adopts modes such as an ultrasonic sensor, and the like, and the response speed possibly cannot keep up with the speed of the tension change of the filament bundles in the process of accelerating and decelerating the equipment and laying; the cylinder is used as a reciprocating mechanism for detecting the tension, and due to the limitation of the structure, the set tension can be larger than the tension on the tows in the optimal state of the tows laying. Besides, the tension reducing mechanism adopts a passive friction mode, so that the tension of the tows can be released to a certain extent, and the tension on the tows is balanced, but only one tension reducing wheel is adopted, even if a large wrap angle is adopted, the contact area between the tows and the friction mechanism is increased, the capability of reducing the tension of the tows is limited, when the laying speed reaches a higher laying speed or is accelerated and decelerated frequently at a higher acceleration, the feeding force of the tows generated by the tension reducing mechanism is not adjustable, and the tension of the balanced tows is far smaller than the tension generated by the tows under the condition, so that the tension of the tows is overlarge.
By adopting the mode of the second patent, the tension of the tows can be reduced to a certain extent, but the tension reducing capability of the device is limited in the face of the condition of large tension caused by the large acceleration laying of the tows, each tow needs to be provided with a tension reducing mechanism, and each tension reducing mechanism is provided with a motor, so that the whole structure size of the spinneret is large, the control mode is complex, and the tension of each tow before entering the spinneret cannot be consistent.
Accordingly, the inventors provide a strand tension control device for a composite strand placement apparatus.
Disclosure of Invention
(1) Technical problem to be solved
The embodiment of the application provides a tow tension control device for a composite material tow laying device, which solves the technical problems of poor laying quality such as a tow bridge, a fold and the like caused by high tension and tension fluctuation when a tow reaches a spinneret pressing roller in the existing tow laying device.
(2) Technical proposal
The application provides a tow tension control device for laying a composite material tow, which comprises a tension control mechanism and a tension reducing mechanism, wherein the tension control mechanism is used for stripping lining paper of a tow material roll, adjusting the tow tension and then transmitting the lining paper into the tension reducing mechanism for reducing the tension; wherein,,
the tension control mechanism comprises an elastic element, a floating roller, a guide rail sliding block, a magnetic powder brake, a tow material scroll, a position sensor and a lining paper recovery shaft, wherein the floating roller reciprocates along the guide rail sliding block through the elastic element, the magnetic powder brake is used for controlling through analog input, the tow material scroll is used for installing the tow material scroll, the position sensor is used for outputting a detected analog signal of the position of the floating roller on the guide rail sliding block to a controller, and the lining paper recovery shaft is used for recovering a tow protection lining layer;
the tension reducing mechanism comprises a transmission shaft, a friction wheel, an air cylinder, a feeding wheel mechanism and a driving motor, wherein the output end of the driving motor is connected with the transmission shaft, the friction wheel is installed on the transmission shaft and moves synchronously, and the air cylinder is used for driving the feeding wheel mechanism to compress or separate from the friction wheel.
Further, the elastic element is a spring, one end of the elastic element is fixed, the other end of the elastic element is connected with the floating roller, and the maximum tension generated by the spring is the maximum tension value allowed by the tows in the laying process.
Further, the surface of the floating roller is subjected to anti-sticking treatment.
Further, the tow spool is a low resistance bearing.
Further, the length of the position sensor is related to the length of the elastic element that is stretched.
Further, the slip sheet recovery shaft is a low resistance bearing.
Further, the surface of the friction wheel is knurled and/or sandblasted.
Further, the feed wheel of the feed wheel mechanism is made of an anti-sticking material.
Further, the tension reducing mechanism further comprises a friction wheel cooling device, and the friction wheel cooling device is used for cooling the friction wheel.
The application also provides a method for controlling the filament tension by using the filament tension control device for laying the composite filament, which comprises the following steps:
the tow with the lining paper passes through a lining paper recovery shaft, the lining paper is wound on the lining paper recovery shaft, and the tow stripped of the lining paper finally enters a wire laying head through a floating roller and a tension reducing mechanism in sequence;
when the yarn bundle is laid, tension is generated and the floating roller is driven to move to a position away from the elastic element, wherein the tension is zero;
when the floating roller is pulled to the maximum position detected by the position sensor and the set delay time does not leave the maximum position, starting the tension reducing mechanism, and driving the feeding mechanism to compress the friction wheel by the air cylinder to drive the tow to be fed forward;
when the floating roller passes through the tension reducing mechanism and is separated from the maximum position detected by the position sensor, the cylinder drives the feeding mechanism to be far away from the friction wheel, and the tension reducing mechanism is stopped.
(3) Advantageous effects
In conclusion, the tension of the tows before entering the spinneret is reduced in an active self-adaptive mode, and compared with the existing active tension reducing technology, the application has the advantages of simple structure, good maintainability and consistent tension reducing effect of each tow; the number of the driving shafts is arranged to ensure that the tension of the tows before entering the spinneret is within a smaller tension range meeting the requirement, and ensure that the pressure of the tows reaching the spinneret pressing roller meets the requirement of laying the tows in a good state, so that the quality of the tows of the composite material in the process of laying the tows is ensured to a certain extent, and the phenomena of bridging, wrinkling and the like in the process of laying the tows caused by overlarge tension of the tows are avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic illustration of a tow tension control device for composite tow placement according to an embodiment of the present application;
FIG. 2 is a schematic illustration of a tension control mechanism in a strand tension control device for strand placement of composite materials according to an embodiment of the present application;
FIG. 3 is a schematic illustration of a tension reducing mechanism in a strand tension control device for strand placement of composite materials according to an embodiment of the present application;
fig. 4 is a schematic flow chart of a method for controlling strand tension for strand placement of composite materials according to an embodiment of the present application.
In the figure:
100-tension control mechanism; 101-an elastic element; 102-floating rollers; 103-a guide rail slide block; 104-a magnetic powder brake; 105-tow reels; 106-a position sensor; 107-backing paper recovery shaft; 200-a tension reducing mechanism; 201-a transmission shaft; 202-friction wheel; 203-cylinder; 204-a feed wheel mechanism; 205-driving a motor; 206-friction wheel cooling device.
Detailed Description
Embodiments of the present application are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the application and are not intended to limit the scope of the application, i.e., the application is not limited to the embodiments described, but covers any modifications, substitutions and improvements in parts, components and connections without departing from the spirit of the application.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
In the description of the present application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships conventionally put in place when the product of the present application is used, or the directions or positional relationships conventionally understood by those skilled in the art are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present application.
In the description of the present application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed" and "mounted" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a tow tension control device for a composite material tow placement device according to an embodiment of the present application, where the device may include a tension control mechanism 100 and a tension reducing mechanism 200, where the tension control mechanism 100 is used to strip a liner of a tow roll and adjust the tow tension, and then send the liner to the tension reducing mechanism 200 for a tension reducing process; wherein,,
as shown in fig. 2, the tension control mechanism 100 includes an elastic member 101, a dancer roll 102, a rail slider 103, a magnetic powder brake 104, a tow reel 105, a position sensor 106, and a backing paper recovery shaft 107, the dancer roll 102 reciprocates along the rail slider 103 through the elastic member 101, the magnetic powder brake 104 is used for controlling through analog input, the tow reel 105 is used for mounting a tow reel, the position sensor 106 is used for outputting a detected analog signal of the position of the dancer roll 102 on the rail slider 103 to a controller, and the backing paper recovery shaft 107 is used for recovering a tow protection liner;
as shown in fig. 3, the tension reducing mechanism 200 includes a transmission shaft 201, a friction wheel 202, an air cylinder 203, a feed wheel mechanism 204, and a driving motor 205, wherein an output end of the driving motor 205 is connected with the transmission shaft 201, the friction wheel 202 is mounted on the transmission shaft 201 and moves synchronously, and the air cylinder 203 is used for driving the feed wheel mechanism 204 to press or separate from the friction wheel 202.
In the above embodiment, the method of detecting and actively reducing tension is adopted, the feeding force of the reducing mechanism generated on the filament bundle is controlled by the pressure proportional valve to control the output pressure of the cylinder, and the cylinder drives the feeding wheel mechanism and the friction wheel to actively feed, so that the feeding force of the filament bundle is controlled. Compared with the passive tension reducing mode which is adopted in the tension reducing control method in the prior art and is used for reducing tension by friction with a corresponding friction wheel mechanism, the tension reducing control method has the advantages that the feeding force for reducing tension of the tows is adjustable and wide in range, and the problem that the feeding force of the tows, which can be generated by the tension reducing mechanism, is not adjustable when the laying speed reaches higher laying speed or is accelerated and decelerated frequently at higher acceleration is avoided, so that the tension reducing effect of the tows is poor under the condition.
The tension reducing mechanism in the tow tension control device adopts a structure that a single motor is used for controlling the tension reducing function of a plurality of tows, and compared with the method that each tow adopts one motor for tension reducing in the prior patent, the tension reducing mechanism can enable the structure of equipment to be more compact and control to be simpler. Meanwhile, compared with the prior art that an ultrasonic sensor and a cylinder are adopted in the tension detection mechanism of the elastic element and the position sensor, the response time is faster, and the structure is simpler.
Particularly, the phenomenon that the filament outlet length is uneven due to different tension of each filament bundle, which possibly occurs in long-distance transmission of the filament bundles, is solved to a certain extent, and the filament outlet device is particularly suitable for filament bundle laying equipment with a separate structure of a filament laying head and a creel.
The cylinder 203 is a double-acting cylinder, and is used for driving the feeding wheel mechanism 204 to press or separate from the friction wheel 202, so that the feeding and tension reducing functions of the filament bundles are realized.
As an alternative embodiment, the elastic element 101 is a spring, one end of which is fixed and the other end of which is connected to the dancer 102, the maximum tension of the spring being the maximum tension allowed by the tow during laying.
Specifically, as shown in fig. 3, the spring is a tension spring, and is used for implementing the reciprocating motion of the dancer 102 on the guide rail slider 103 under the action of the tension pulling of the filament bundle, and the maximum tension of the spring on the tension control mechanism is the maximum tension value allowed by the filament bundle in the laying process.
As an alternative embodiment, the surface of dancer 102 is treated with a release treatment. The floating roller 102 can rotate with low resistance by itself through a self-installed shaft, a bearing or other modes, and the surface of the floating roller 102 is subjected to anti-sticking treatment, so that the floating roller is not adhered to the filament bundles in the filament bundle transmission process.
As an alternative embodiment, the tow spool 105 is a low resistance bearing. The tow material reel 105 is used for installing a tow material roll, the tow material roll is fixed on the tow material reel 105 by adopting a pneumatic clamping or mechanical clamping mode and the like, and the tow material reel 105 adopts a low-resistance bearing and can flexibly rotate.
As an alternative embodiment, the length of the position sensor 106 is related to the length of the elastic element 101 that is stretched.
Specifically, the position sensor 106 selects an optical detection switch, a magnetic detection switch or a position detection switch with high detection precision and high response speed of the same type, the position sensor 106 outputs analog quantity signals to the controller by detecting the corresponding position of the floating roller 102 on the guide rail slide block 103 under the action of the tension of the elastic element 101 and the silk bundle, and the controller processes the signals and inputs the signals to the magnetic powder brake 104, so that the magnetic powder brake 104 outputs torques with different magnitudes; the length of the position sensor 104 is related to the length of the elastic element 101 that is stretched, and it is necessary to be able to fully detect the stretched length of the elastic element 101.
As an alternative embodiment, the liner paper recovery shaft 107 is a low resistance bearing. The backing paper recovery shaft 107 adopts a low-resistance bearing, can flexibly rotate by itself, and is used for realizing the recovery of the tow protection lining.
As an alternative embodiment, the surface of friction wheel 202 is knurled and/or sandblasted. The friction wheel 202 is mounted on the transmission shaft 201 by means of threads or keys, and the surface of the friction wheel 202 is knurled, sandblasted or otherwise used for increasing friction. The linear speed at which the friction wheel 202 rotates coincides in real time with the lay-up speed.
As an alternative embodiment, the feed wheel of the feed wheel mechanism 204 is made of a release material. The feeding wheel mechanism 204 is used for guiding and feeding the filament bundles. The feed wheel has a rib for preventing the tow from jumping off the guide track as the feed wheel moves. The feed wheel is made of an anti-sticking material such as Teflon and the like, and the filament bundles are prevented from adhering to the feed wheel in the process of feeding and reducing tension.
As an alternative embodiment, the tension reducing mechanism 200 further includes a friction wheel cooling device 206, the friction wheel cooling device 206 being configured to cool the friction wheel 202.
Specifically, the addition of the pulley cooling device 206 reduces to some extent the problem of the tow sticking to the pulley 202 due to the high surface tackiness of the tow caused by the high temperature of the pulley 202.
Fig. 4 is a flow chart of a method for controlling tension of a filament bundle according to an embodiment of the present application, which may include the following steps:
s100, winding the lining paper on a lining paper recovery shaft through the lining paper recovery shaft, and enabling the tow with the lining paper to be stripped to enter a wire laying head through a floating roller and a tension reducing mechanism in sequence;
s200, when the filament bundles generate tension in the laying process, the floating roller is driven to move to a position away from the elastic element, wherein the tension of the floating roller is zero;
s300, when the floating roller is pulled to the maximum position detected by the position sensor and the set delay time does not leave the maximum position, starting the tension reducing mechanism, and driving the feeding mechanism to compress the friction wheel by the air cylinder to drive the tow to advance;
and S400, when the floating roller is separated from the maximum position detected by the position sensor through the action of the tension reducing mechanism, the cylinder drives the feeding mechanism to be far away from the friction wheel, and the tension reducing mechanism is stopped.
In the above embodiment, the tow roll is mounted on the tension control mechanism, and is mounted in a winding manner shown in fig. 3. The tow with the lining paper passes through the lining paper recovery shaft, the lining paper is wound on the lining paper recovery shaft, the tow stripped of the lining paper sequentially passes through the floating roller, and the tension reducing mechanism finally enters the wire laying head.
The distance that the floating roller is pulled out is in a linear inverse proportion relation with the magnitude of the torque output by the magnetic powder brake, namely the farther the floating roller is pulled out, the smaller the torque output by the magnetic powder brake is, and the position of the floating roller is used for reflecting the magnitude of the tension of the filament bundles.
The output pressure of the cylinder in the tension reducing mechanism is controlled by a pressure proportional valve, and the output pressure of the cylinder determines the feeding force generated by the friction wheel and the feeding wheel mechanism, so that the control of the feeding force can be realized. In general, the feeding force should be greater than the sum of the resistance of the whole tension control link mechanism and the moment of inertia of the tow roll for starting inertial rotation.
The linear speed driven by the friction wheel mechanism is consistent with the laying speed in real time, and the feeding direction is the feeding direction of the filament bundle to the filament laying head, so that the tension of the filament bundle after passing through the tension reducing mechanism is reduced.
In the initial condition, the tows have no tension, the torque value of the magnetic powder brake is maximum, the spring is not stressed, and the floating roller is at the position where the tension of the spring is zero; the cylinder in the tension reducing mechanism is retracted, and the feeding wheel mechanism and the friction wheel do not generate feeding action.
When the yarn bundle is laid, tension is generated and the floating roller in the tension control mechanism is driven to move to a position far away from the position where the tension of the spring is zero, and the length of the floating roller stretching spring is longer as the tension of the yarn bundle is larger. At the moment, the position sensor detects the position of the floating roller, and the magnetic powder brake is controlled by the output signal of the controller to reduce the output torque value. If the stretched position of the dancer roll caused by the tension of the tows is within the maximum position detected by the position sensor through the control method, the tension of the tows can be ensured to be within a preset tension range, the requirement of the tension of the tows during laying is met, and the tension reducing mechanism is not started at the moment.
When the floating roller is pulled to the maximum position detected by the position sensor, and the floating roller is delayed for a certain time to not leave the maximum position, the tension reducing mechanism is started, and the air cylinder drives the feeding mechanism to compress the friction wheel so as to drive the tow to be fed forward. When the floating roller passes through the action of the tension reducing mechanism and leaves the maximum position detected by the position sensor, the air cylinder drives the feeding mechanism to be far away from the friction wheel, and the tension reducing mechanism stops feeding the tension reducing function.
Example 1
In some type of spun yarn integrated automatic laying head, a tow roll is installed and wound in the tension control mechanism 100 in the manner shown in fig. 3, and the tow exiting the tension control mechanism 100 enters the tension reducing mechanism 200 through an associated guide mechanism, and the tow passing through the tension reducing mechanism 200 enters the laying head through the guide mechanism. When the filament bundle is laid, the upper tension of the filament bundle is changed due to the change of the laying speed, so that the floating roller in the tension control mechanism 100 swings, the position change of the floating roller is detected by the position sensor, and the position sensor outputs the corresponding model to adjust the output torque of the magnetic powder brake, so that the tension on the filament bundle is adjusted. When the tension of the filament bundle is too high, the tension reducing mechanism 200 is started to actively reduce the tension of the filament bundle by adjusting the output pressure of the air cylinder to match the tension generated on the filament bundle at the moment and generating a feeding force on the filament bundle. The tow material rolls pass through the cooperative control of the tension control mechanism 100 and the tension reducing mechanism 200 in the tow tension control device, so that the control of the tow tension is finally realized, and the control of the tow tension in the range of 0-1N can be realized.
It should be understood that, in the present specification, each embodiment is described in an incremental manner, and the same or similar parts between the embodiments are all referred to each other, and each embodiment is mainly described in a different point from other embodiments. The application is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known method techniques is omitted here for the sake of brevity.
The above is only an example of the present application and is not limited to the present application. Various modifications and alterations of this application will become apparent to those skilled in the art without departing from the scope of this application. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (9)
1. A tow tension control device for composite material tow placement, which is characterized by comprising a tension control mechanism (100) and a tension reducing mechanism (200), wherein the tension control mechanism (100) is used for stripping lining paper of a tow material roll, adjusting the tow tension and then transmitting the lining paper into the tension reducing mechanism (200) for tension reducing treatment; wherein,,
the tension control mechanism (100) comprises an elastic element (101), a floating roller (102), a guide rail sliding block (103), a magnetic powder brake (104), a tow material scroll (105), a position sensor (106) and a lining paper recovery shaft (107), wherein the floating roller (102) reciprocates along the guide rail sliding block (103) through the elastic element (101), the magnetic powder brake (104) is used for controlling through analog input, the tow material scroll (105) is used for installing the tow material roll, the position sensor (106) is used for outputting a detected position analog quantity signal of the floating roller (102) on the guide rail sliding block (103) to a controller, and the lining paper recovery shaft (107) is used for recovering a tow protection lining layer;
the tension reducing mechanism (200) comprises a transmission shaft (201), a friction wheel (202), an air cylinder (203), a feeding wheel mechanism (204) and a driving motor (205), wherein the output end of the driving motor (205) is connected with the transmission shaft (201), the friction wheel (202) is installed on the transmission shaft (201) and moves synchronously, and the air cylinder (203) is used for driving the feeding wheel mechanism (204) to compress or separate from the friction wheel (202);
the elastic element (101) is a spring, one end of the elastic element is fixed, the other end of the elastic element is connected with the floating roller (102), and the maximum tension generated by the spring is the maximum tension value allowed by the tows in the laying process.
2. The strand tension control device for strand placement of composite material of claim 1, wherein the surface of the dancer roll (102) is treated with a release treatment.
3. The strand tension control device for composite strand lay-up according to claim 1, wherein the strand spool (105) is a low resistance bearing.
4. Tow tension control device for composite tow placement according to claim 1, characterized in that the length of the position sensor (106) is related to the length of the elastic element (101) being stretched.
5. The strand tension control device for composite strand placement of claim 1, wherein the liner recovery shaft (107) is a low resistance bearing.
6. Tow tension control device for composite tow placement according to claim 1, characterized in that the surface of the friction wheel (202) is knurled and/or sandblasted.
7. The strand tension control device for strand placement of composite material of claim 1, wherein the feed wheel of the feed wheel mechanism (204) is fabricated from a release material.
8. The strand tension control device for composite strand placement of claim 1, wherein the tension reducing mechanism (200) further comprises a friction wheel cooling device (206), the friction wheel cooling device (206) being configured to cool the friction wheel (202).
9. A method of controlling strand tension using a strand tension control device for strand placement of composite material as claimed in any one of claims 1 to 8, comprising the steps of:
the tow with the lining paper passes through a lining paper recovery shaft, the lining paper is wound on the lining paper recovery shaft, and the tow stripped of the lining paper finally enters a wire laying head through a floating roller and a tension reducing mechanism in sequence;
when the yarn bundle is laid, tension is generated and the floating roller is driven to move to a position away from the elastic element, wherein the tension is zero;
when the floating roller is pulled to the maximum position detected by the position sensor and the set delay time does not leave the maximum position, starting the tension reducing mechanism, and driving the feeding mechanism to compress the friction wheel by the air cylinder to drive the tow to be fed forward;
when the floating roller passes through the tension reducing mechanism and is separated from the maximum position detected by the position sensor, the cylinder drives the feeding mechanism to be far away from the friction wheel, and the tension reducing mechanism is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211324447.5A CN115583539B (en) | 2022-10-27 | 2022-10-27 | Tow tension control device and method for composite material tow laying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211324447.5A CN115583539B (en) | 2022-10-27 | 2022-10-27 | Tow tension control device and method for composite material tow laying |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115583539A CN115583539A (en) | 2023-01-10 |
| CN115583539B true CN115583539B (en) | 2023-09-19 |
Family
ID=84782393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211324447.5A Active CN115583539B (en) | 2022-10-27 | 2022-10-27 | Tow tension control device and method for composite material tow laying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115583539B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116692607B (en) * | 2023-08-02 | 2024-01-26 | 北京建筑大学 | Intelligent synchronous winding and unwinding system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110006373A (en) * | 2009-07-14 | 2011-01-20 | 삼성중공업 주식회사 | Apparatus for cable feeding |
| CN110498293A (en) * | 2019-08-23 | 2019-11-26 | 西安交通大学 | A kind of anti-sticking preimpregnation tow of temperature controllable subtracts a conveying device |
| CN110498292A (en) * | 2019-08-23 | 2019-11-26 | 西安交通大学 | Based on big cornerite and great friction coefficient fibre bundle low-tension conveying device and method |
| CN212315207U (en) * | 2020-06-08 | 2021-01-08 | 安徽楚江高新电材有限公司 | Automatic doubling device |
| CN112429596A (en) * | 2020-12-22 | 2021-03-02 | 南通新帝克单丝科技股份有限公司 | Large-diameter polymer monofilament coiling device |
| CN114348784A (en) * | 2022-01-05 | 2022-04-15 | 中国航空制造技术研究院 | Torque transmitter and tow releasing mechanism |
| CN114488814A (en) * | 2022-01-26 | 2022-05-13 | 中国航空制造技术研究院 | High-precision laying tension control method for eliminating gravity disturbance |
| CN114671301A (en) * | 2022-03-17 | 2022-06-28 | 合肥通晟智能装备有限公司 | Extremely low tensile sectional type control system of tow in fiber placement equipment |
-
2022
- 2022-10-27 CN CN202211324447.5A patent/CN115583539B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110006373A (en) * | 2009-07-14 | 2011-01-20 | 삼성중공업 주식회사 | Apparatus for cable feeding |
| CN110498293A (en) * | 2019-08-23 | 2019-11-26 | 西安交通大学 | A kind of anti-sticking preimpregnation tow of temperature controllable subtracts a conveying device |
| CN110498292A (en) * | 2019-08-23 | 2019-11-26 | 西安交通大学 | Based on big cornerite and great friction coefficient fibre bundle low-tension conveying device and method |
| CN212315207U (en) * | 2020-06-08 | 2021-01-08 | 安徽楚江高新电材有限公司 | Automatic doubling device |
| CN112429596A (en) * | 2020-12-22 | 2021-03-02 | 南通新帝克单丝科技股份有限公司 | Large-diameter polymer monofilament coiling device |
| CN114348784A (en) * | 2022-01-05 | 2022-04-15 | 中国航空制造技术研究院 | Torque transmitter and tow releasing mechanism |
| CN114488814A (en) * | 2022-01-26 | 2022-05-13 | 中国航空制造技术研究院 | High-precision laying tension control method for eliminating gravity disturbance |
| CN114671301A (en) * | 2022-03-17 | 2022-06-28 | 合肥通晟智能装备有限公司 | Extremely low tensile sectional type control system of tow in fiber placement equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115583539A (en) | 2023-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209378388U (en) | A kind of strength building system | |
| US5437417A (en) | Device for winding a web | |
| KR102407024B1 (en) | Tension Control Direct Driven Roller Festoon | |
| CN115583539B (en) | Tow tension control device and method for composite material tow laying | |
| CN109720905B (en) | Unreeling and receiving tension control method and unreeling and receiving mechanism | |
| JPH10511632A (en) | Winding device | |
| CN110498292B (en) | Low-tension conveying device and method based on large wrap angle and high-friction-coefficient fiber tows | |
| JP2004175472A (en) | Linear material winding device and method | |
| JP3533165B2 (en) | Yarn sheet winder | |
| US20230311430A1 (en) | A tape laying head | |
| WO2010140035A4 (en) | Apparatus and method for exchange of cores in a winding machines | |
| CN104085740A (en) | Uncoiling and tensioning device applied to fiber coating device | |
| CN211594590U (en) | Wire arranging mechanism suitable for zipper tape winder | |
| CN115771806A (en) | Continuous fiber bundle spiral unreeling tensioning and guiding integrated device and control method | |
| CN116331949A (en) | Tow low tension device for automatic composite material laying | |
| CN109399307B (en) | Tension control mechanism | |
| CN216686798U (en) | Low-tension PE film active unwinding buffer control device | |
| JP4414576B2 (en) | Winding control method for sheet material and winder | |
| US5111646A (en) | Tape wrapping device with plural independently rotatable spool carriers | |
| WO2008116311A9 (en) | Web processing system with adjustable multiple slit web separation and redirection system and/or with automatic rewind and/or automatic unwind roll transfer system | |
| CN211733268U (en) | Zipper tape winder | |
| CN104555594A (en) | Driving and tension controlling device used for tow collating | |
| CN219832725U (en) | Winding equipment | |
| JP2640530B2 (en) | Sheet split winding device | |
| JP2005001820A (en) | Sheet slitting take-up device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |